The smart and funny Hugh Grant joins Graham Norton on the sofa tonight, chatting as much about his role in the Leveson Inquiry as he does about his voice-over in new Aardman Animations feature film The Pirates! In An Adventure With Scientists. Gavin & Stacey star Joanna Page is doing the promotional rounds too â sheâs in a new BBC1 lottery drama called The Syndicate, co-starring Timothy Spall and Matthew Lewis (aka Neville from Harry Potter).

The Last Castle, BBC1, 11.30pm

Critic Rod Lurie became a successful film-maker with his debut feature, The Contender. His former colleagues were less kind about this sophomore movie, a prison drama that draws on Lurieâs time as a US army officer. The lines of conflict between Robert Redfordâs war hero â imprisoned for defying a bad order â and James Gandolfiniâs tinpot commandant are too simple. The march towards an inevitable uprising has one too many implausible steps. But the revolt is well-staged, Gandolfini growls impressively and, politics aside, thereâs an undeniable gung-ho exuberance to the action.

Helenâs Polar Challenge For Sport Relief, BBC1, 8.30pm

Helen Skelton: sheâs sweet, plucky and a former Blue Peter presenter, so was inevitably going to be on our screens in the run-up to the big Sport Relief fundraiser this month. In January she finished a gruelling 500-mile trek to the South Pole, in temperatures of -36C, and is the first person in the world to do part of the route by bike.

Transatlantic Sessions, BBC4, 9pm

This penultimate episode of the series sees the best of Nashville, Ireland and Scotland collide in an old hunting lodge in the Perthshire Highlands, filling it with country and Gaelic sounds. Veterans Béla Fleck and Eddi Reader are just two of a long roster of musicians and vocalists.

Alexander Armstrongâs Big Ask, Dave, 9.40pm

Comedians Andy Parsons, Russell Kane and Steve Punt see out the current series of this lively panel show in which guests have to devise and answer their own questions. Alexander Armstrong marshals the chat and Come Dine With Meâs Dave Lamb dishes out trivia nuggets in his Fact Bunker.

Modern Family, Sky1, 8pm

Tonightâs episode of the brilliantly scripted mockumentary centres on yet another example of Philâs social ineptitude. Heâs so desperate to impress potential client Tad (guest star Greg Kinnear) that he doesnât even notice his bizarrely forward way of greeting women, much to wife Claireâs chagrin. There are fireworks over at Gloria and Jayâs too, after Mitch and Cam are forced to temporarily move in. In the words of grumbling Jay: âItâs noisier than usual.â